package com.hxd.common.aspect;

import java.lang.reflect.Method;
import java.util.Arrays;

import javax.servlet.http.HttpServletRequest;

import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.Signature;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.AfterThrowing;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;

import com.hxd.common.annotation.Log;
import com.hxd.common.constant.UserConstants;
import com.hxd.common.core.manager.AsyncManager;
import com.hxd.common.core.manager.factory.AsyncFactory;
import com.hxd.common.enums.BusinessStatus;
import com.hxd.common.utils.HttpContextUtils;
import com.hxd.common.utils.IPUtils;
import com.hxd.common.utils.StringUtils;
import com.hxd.entity.SysOperLog;
import com.hxd.entity.SysUser;

/**
 * 操作日志记录处理
 *
 */
@Aspect
@Component
public class LogAspect {

	private static final Logger log = LoggerFactory.getLogger(LogAspect.class);
	
	// 配置织入点
    @Pointcut("@annotation(com.hxd.common.annotation.Log)")
    public void logPointCut() { }
    
    /**
     * 处理完请求后执行
     *
     * @param joinPoint 切点
     */
    @AfterReturning(pointcut = "logPointCut()")
    public void doAfterReturning(JoinPoint joinPoint) {
        handleLog(joinPoint, null);
    }

    /**
     * 拦截异常操作
     * 
     * @param joinPoint 切点
     * @param e 异常
     */
    @AfterThrowing(value = "logPointCut()", throwing = "e")
    public void doAfterThrowing(JoinPoint joinPoint, Exception e) {
        handleLog(joinPoint, e);
    }
    
    protected void handleLog(final JoinPoint joinPoint, final Exception e) {
        try {
            // 获得注解
            Log controllerLog = getAnnotationLog(joinPoint);
            if (controllerLog == null) {
                return;
            }
            HttpServletRequest request = HttpContextUtils.getHttpServletRequest();
            // 获取当前的用户
            SysUser user = (SysUser) request.getAttribute(UserConstants.LOGIN_USER);

            // *========数据库日志=========*//
            SysOperLog operLog = new SysOperLog();
            operLog.setStatus(BusinessStatus.SUCCESS.ordinal());
            // 请求的地址
            String ip = IPUtils.getIpAddr(request);
            operLog.setOperIp(ip);

            operLog.setOperUrl(request.getRequestURI());
            if (user != null) {
                operLog.setOperName(user.getUsername() + "/" + user.getUsername());
                operLog.setOperUserId(user.getId());
            }
            if (e != null) {
                operLog.setStatus(BusinessStatus.FAIL.ordinal());
                operLog.setErrorMsg(StringUtils.substring(e.getMessage(), 0, 2000));
            }
            // 设置方法名称
            String className = joinPoint.getTarget().getClass().getName();
            String methodName = joinPoint.getSignature().getName();
            operLog.setMethod(className + "." + methodName + "()");
            try {
            	// 设置请求方式
                operLog.setRequestMethod(request.getMethod());
            }catch (Exception exp) {
            	log.error("日志设置请求参数异常信息:{}", exp.getMessage());
            }
            // 设置请求参数
            operLog.setOperParam(Arrays.toString(joinPoint.getArgs()));
            // 处理设置注解上的参数
            getControllerMethodDescription(controllerLog, operLog);
            // 保存数据库
            AsyncManager.me().execute(AsyncFactory.recordOper(operLog));
        }catch (Exception exp) {
            // 记录本地异常日志
            log.error("==前置通知异常==");
            log.error("异常信息:{}", exp.getMessage());
            exp.printStackTrace();
        }
    }
    
    /**
     * 获取注解中对方法的描述信息 用于Controller层注解
     * 
     * @param log 日志
     * @param operLog 操作日志
     * @throws Exception
     */
    public void getControllerMethodDescription(Log log, SysOperLog operLog) throws Exception {
        // 设置action动作
        operLog.setBusinessType(log.businessType().ordinal());
        // 设置标题
        operLog.setTitle(log.title());
        // 设置操作人类别
        operLog.setOperatorType(log.operatorType().ordinal());
        // 设置模块类别
        operLog.setModuleType(log.moduleType().ordinal());
    }


    /**
     * 是否存在注解，如果存在就获取
     */
    private Log getAnnotationLog(JoinPoint joinPoint) throws Exception {
        Signature signature = joinPoint.getSignature();
        MethodSignature methodSignature = (MethodSignature) signature;
        Method method = methodSignature.getMethod();

        if (method != null) {
            return method.getAnnotation(Log.class);
        }
        return null;
    }
    
}
